/*
 * Copyright (c) 2011, Eriq Muhammad Adams J.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Institute Technology of Sepuluh Nopember nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY ERIQ MUHAMMAD ADAMS J. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <copyright holder> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.googlecode.pathmachine.ui.renderer.impl;

import com.googlecode.pathmachine.mm.Point3D;
import com.jme3.scene.Mesh;
import com.jme3.scene.VertexBuffer.Type;
import com.jme3.util.BufferUtils;
import java.nio.FloatBuffer;
import java.nio.IntBuffer;
import java.util.List;

/**
 * 
 * @author <a href="mailto:eriq.adams@gmail.com">Eriq Muhammad Adams J.</a> 
 */
public class Edges extends Mesh {

    public Edges(List<Point3D> startPoints, List<Point3D> endPoints) {

        // prepare buffer
        int lineCount = startPoints.size();
        FloatBuffer fpb = BufferUtils.createFloatBuffer(6 * lineCount);
        IntBuffer sib = BufferUtils.createIntBuffer(2 * lineCount);

        int curIndex = 0;

        // creating lines
        for (int i = 0; i < lineCount; i++) {
            // positions
            Point3D sp = startPoints.get(i);
            Point3D ep = endPoints.get(i);
            fpb.put(sp.x).put(sp.y).put(sp.z);
            fpb.put(ep.x).put(ep.y).put(ep.z);

            // indices
            sib.put((curIndex++));
            sib.put((curIndex++));
        }


        fpb.flip();
        sib.flip();

        startPoints.clear();
        endPoints.clear();

        setBuffer(Type.Position, 3, fpb);
        setBuffer(Type.Index, 2, sib);

        setMode(Mode.Lines);

        updateBound();
        updateCounts();
    }
}
